Simply slide the 5/16" hex down into the engine block until it engages into the oil pump and spin it with a drill to prime the engine with oil. These made from high-strength steel with a black oxide finish.
Hex rod is 15.00" long and works with all 5/16" hex Hemi oil pumps on a TFX, KB, BAE, Indy, CN, JP-1 or Mopar engine blocks.